Peter Feeney, who retired from RTÉ in 2012, will succeed John Horgan, who became the first press ombudsman when the office was established in 2007.
Mr Feeney will be responsible for handling around 380 complaints a year from members of the public about newspaper and magazine articles, as well as online content.
Daithí Ó Ceallaigh, chairman of the Press Council, the industry’s regulatory body, said: “I am delighted that Peter Feeney has accepted the Press Council’s invitation to be our next press ombudsman.
“He has enjoyed a long and respected media career with a strong commitment to standards in journalism, news, and current affairs.
“Mr Feeney has considerable experience in the area of compliance and complaint handling and we look forward very much to working with him.”
Mr Feeney was a politics lecturer at the University of Ulster before joining RTÉ, where he became editor of television current affairs. He later became the broadcaster’s Freedom of Information officer and, before he retired, was head of broadcast compliance.
In that capacity, he managed complaints made to the Broadcasting Authority of Ireland about RTÉ.
He takes over as press ombudsman in September.